India considered trace elements, so called the rare items that do not have the ability to concentrate in the earth's crust.They do not form their own fields, and non-metallic raw materials are extracted from the processing of ores or other elements.
India recovered from the ores of copper-pyrite, pyrite-polymetallic and lead-zinc deposits.Most of indium contained in the high-temperature hydrothermal deposits.
Natural indium represented by two isotopes, one of which is weakly radioactive.It is known for its five minerals - rokezit, sakuranit, native indium inditia and Dzhalinda.The degree of oxidation is +3 indium, rare one.
on air Indium is stable, and at temperatures above 800 ° C it burns violet-blue flame, forming the indium oxide.Metal reacts slowly with mineral and org
anic acids, most easily reacts with nitric acid.It is soluble in hydrochloric acid, sulfuric acid and perchloric acid, but hardly reacts with alkalis even boiling.
indium in water gradually corrode in the presence of air.When heated, it reacts with sulfur dioxide and its, selenium, phosphorus and tellurium vapor.In dry air at room temperature Indium is stable for a long time and does not tarnish.
India toxic, its dust can cause inflammatory and sclerotic lesions of the lungs.Indium compounds adversely affect the spleen and liver, irritate the eyes, skin and mucous membranes.
India can detect the spectral method or blue-violet flame for its quantitative determination using chelatometry and amperometric titration.In order to detect small amounts of the metal used radioactivation, polarographic and spectral method.Before performing this concentration of indium extraction, co-precipitation or electrolysis.
Indium is used as a dopant to the semiconductor silicon or germanium.It is used as a sealing material in space technology and vacuum devices, as well as a connector of piezoelectric crystals.
India finds its application in temperature limiter and signaling devices, fuses and radiation contours of nuclear reactors.It is used as a solder, is applied to the bearing surfaces, reflectors and mirrors, indium also may be a component of low-melting alloys.